q 2004 American Meteorological Society Characterization of Millennial-Scale Climate Variability
The oxygen isotope time series from ice cores in central Greenland [the Greenland Ice Sheet Project 2 (GISP2) and the Greenland Ice Core Project (GRIP)] and West Antarctica (Byrd) provide a basis for evaluating the behavior of the climate system on millennial time scales. These time series have been...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.488.6499 2023-05-15T13:47:15+02:00 q 2004 American Meteorological Society Characterization of Millennial-Scale Climate Variability Gerard H. Roe Eric J. Steig The Pennsylvania State University CiteSeerX Archives 2003 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.488.6499 http://faculty.washington.edu/steig/papers/recent/RoeSteigJClim2004.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.488.6499 http://faculty.washington.edu/steig/papers/recent/RoeSteigJClim2004.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://faculty.washington.edu/steig/papers/recent/RoeSteigJClim2004.pdf text 2003 ftciteseerx 2016-01-08T08:20:23Z The oxygen isotope time series from ice cores in central Greenland [the Greenland Ice Sheet Project 2 (GISP2) and the Greenland Ice Core Project (GRIP)] and West Antarctica (Byrd) provide a basis for evaluating the behavior of the climate system on millennial time scales. These time series have been invoked as evidence for mechanisms such as an interhemispheric climate seesaw or a stochastic resonance process. Statistical analyses are used to evaluate the extent to which these mechanisms characterize the observed time series. Simple models in which the Antarctic record reflects the Greenland record or its integral are statistically superior to a model in which the two time series are unrelated. However, these statistics depend primarily on the large events in the earlier parts of the record (between 80 and 50 kyr BP). For the shorter, millennial-scale (Dansgaard–Oeschger) events between 50 and 20 kyr BP, a first-order autoregressive [AR(1)] stochastic climate model with a physical time scale of t 5 600 6 300 yr is a self-consistent explanation for the Antarctic record. For Greenland, AR(1) with t 5 400 6 200 yr, plus a simple threshold rule, provides a statistically comparable characterization to stochastic resonance (though it cannot account for the strong 1500-yr spectral peak). The similarity of the physical time scales underlying the millennial-scale variability provides sufficient explanation for the similar appearance of the Greenland and Antarctic records during the 50–20-kyr BP interval. However, it cannot be Text Antarc* Antarctic Antarctica Dansgaard-Oeschger events Greenland Greenland ice core Greenland Ice core Project Greenland Ice Sheet Project GRIP ice core Ice Sheet West Antarctica Unknown Antarctic The Antarctic West Antarctica Greenland Byrd |
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description |
The oxygen isotope time series from ice cores in central Greenland [the Greenland Ice Sheet Project 2 (GISP2) and the Greenland Ice Core Project (GRIP)] and West Antarctica (Byrd) provide a basis for evaluating the behavior of the climate system on millennial time scales. These time series have been invoked as evidence for mechanisms such as an interhemispheric climate seesaw or a stochastic resonance process. Statistical analyses are used to evaluate the extent to which these mechanisms characterize the observed time series. Simple models in which the Antarctic record reflects the Greenland record or its integral are statistically superior to a model in which the two time series are unrelated. However, these statistics depend primarily on the large events in the earlier parts of the record (between 80 and 50 kyr BP). For the shorter, millennial-scale (Dansgaard–Oeschger) events between 50 and 20 kyr BP, a first-order autoregressive [AR(1)] stochastic climate model with a physical time scale of t 5 600 6 300 yr is a self-consistent explanation for the Antarctic record. For Greenland, AR(1) with t 5 400 6 200 yr, plus a simple threshold rule, provides a statistically comparable characterization to stochastic resonance (though it cannot account for the strong 1500-yr spectral peak). The similarity of the physical time scales underlying the millennial-scale variability provides sufficient explanation for the similar appearance of the Greenland and Antarctic records during the 50–20-kyr BP interval. However, it cannot be |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Gerard H. Roe Eric J. Steig |
spellingShingle |
Gerard H. Roe Eric J. Steig q 2004 American Meteorological Society Characterization of Millennial-Scale Climate Variability |
author_facet |
Gerard H. Roe Eric J. Steig |
author_sort |
Gerard H. Roe |
title |
q 2004 American Meteorological Society Characterization of Millennial-Scale Climate Variability |
title_short |
q 2004 American Meteorological Society Characterization of Millennial-Scale Climate Variability |
title_full |
q 2004 American Meteorological Society Characterization of Millennial-Scale Climate Variability |
title_fullStr |
q 2004 American Meteorological Society Characterization of Millennial-Scale Climate Variability |
title_full_unstemmed |
q 2004 American Meteorological Society Characterization of Millennial-Scale Climate Variability |
title_sort |
q 2004 american meteorological society characterization of millennial-scale climate variability |
publishDate |
2003 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.488.6499 http://faculty.washington.edu/steig/papers/recent/RoeSteigJClim2004.pdf |
geographic |
Antarctic The Antarctic West Antarctica Greenland Byrd |
geographic_facet |
Antarctic The Antarctic West Antarctica Greenland Byrd |
genre |
Antarc* Antarctic Antarctica Dansgaard-Oeschger events Greenland Greenland ice core Greenland Ice core Project Greenland Ice Sheet Project GRIP ice core Ice Sheet West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Dansgaard-Oeschger events Greenland Greenland ice core Greenland Ice core Project Greenland Ice Sheet Project GRIP ice core Ice Sheet West Antarctica |
op_source |
http://faculty.washington.edu/steig/papers/recent/RoeSteigJClim2004.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.488.6499 http://faculty.washington.edu/steig/papers/recent/RoeSteigJClim2004.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766246814391992320 |